<template>
  <div class="">
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card class="box-card">
      <el-alert title="添加商品信息" type="info" center show-icon :closable="false"> </el-alert>

      <el-steps :space="200" :active="activeIndex - 0" finish-status="success" align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top">
        <el-tabs v-model="activeIndex" :tab-position="tabPosition" :before-leave="beforeTabLeave" @tab-click="tabClicked">
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品分类：" prop="goodsCat">
              <el-cascader v-model="addForm.goodsCat" :options="cateList" :props="treeProps" @change="handleChange" clearable> </el-cascader>
            </el-form-item>
            <el-form-item label="商品名称" prop="goodsName">
              <el-input v-model="addForm.goodsName"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goodsPrice">
              <el-input v-model="addForm.goodsPrice" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goodsNumber">
              <el-input v-model="addForm.goodsNumber" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goodsWeight">
              <el-input v-model="addForm.goodsWeight" type="number"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item :label="item.attrName" v-for="item in manyTableData" :key="item.id">
              <el-checkbox-group v-model="item.attrVals">
                <el-checkbox :label="cb" v-for="(cb, i) in item.attrVals" :key="i" border></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item :label="item.attrName" v-for="item in onlyTableData" :key="item.id">
              <el-input v-model="item.attrVals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload :action="uploadUrl" list-type="picture-card" :on-preview="handlePictureCardPreview" :on-remove="handleRemove" :headers="headersObj" :on-success="handleSuccess">
              <i class="el-icon-plus"></i>
            </el-upload>
            <el-dialog :visible.sync="dialogVisible">
              <img width="100%" :src="dialogImageUrl" alt="" />
            </el-dialog>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="addForm.goodsIntroduce"> </quill-editor>
            <el-button type="primary" class="btnAdd" @click="addItem">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
  </div>
</template>

<script>
export default {
  data() {
    return {
      activeIndex: '0',
      tabPosition: 'left',
      cateList: [],
      treeProps: {
        expandTrigger: 'hover',
        checkStrictly: false,
        value: 'id',
        label: 'catName',
        children: 'children'
      },
      addForm: {
        goodsName: '',
        goodsPrice: 0,
        goodsNumber: 0,
        goodsWeight: 0,
        goodsCat: [],
        pics: [],
        goodsIntroduce: '',
        attrs: []
      },
      addFormRules: {
        goodsName: [{ required: true, message: '请输入商品名称', trigger: 'blur' }],
        goodsPrice: [{ required: true, message: '请输入商品价格', trigger: 'blur' }],
        goodsNumber: [{ required: true, message: '输入商品数量', trigger: 'blur' }],
        goodsWeight: [{ required: true, message: '请输入商品重量', trigger: 'blur' }],
        goodsCat: [{ required: true, message: '请输选择商品分类', trigger: 'blur' }]
      },
      manyTableData: [],
      onlyTableData: [],
      uploadUrl: 'http://127.0.0.1:8090/api/upload',
      dialogImageUrl: '',
      dialogVisible: false,
      headersObj: {
        Authorization: window.sessionStorage.getItem('token')
      }
    }
  },

  created() {
    this.getCateList()
  },

  computed: {
    cateId() {
      if (this.addForm.goodsCat.length === 3) {
        return this.addForm.goodsCat[this.addForm.goodsCat.length - 1]
      }
      return null
    }
  },

  methods: {
    // 获取父级分类的数据列表
    async getCateList() {
      const { data: res } = await this.$http.get('categories', {
        params: { type: 3 }
      })

      if (res.meta.status !== 200) {
        return this.$message.error('获取父级分类数据失败！')
      }

      this.cateList = res.data.result
    },

    handleChange() {
      if (this.addForm.goodsCat.length != 3) {
        this.addForm.goodsCat = []
        return
      }
    },

    beforeTabLeave(activeName, oldActiveName) {
      if (oldActiveName === '0' && this.addForm.goodsCat.length != 3) {
        this.$message.error('请选择商品分类!')
        return false
      }
    },

    async tabClicked() {
      if (this.activeIndex === '1') {
        const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, {
          params: { sel: 'many' }
        })

        if (res.meta.status !== 200) {
          return this.$message.error('获取动态参数列表失败！')
        }
        res.data.forEach(item => {
          item.deleteTime = ''
          item.attrVals = item.attrVals.length === 0 ? [] : item.attrVals.split(' ')
        })
        this.manyTableData = res.data
      } else if (this.activeIndex === '2') {
        const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, {
          params: { sel: 'only' }
        })

        if (res.meta.status !== 200) {
          return this.$message.error('获取静态属性列表失败！')
        }
        this.onlyTableData = res.data
      }
    },

    handleRemove(file, fileList) {
      // console.log(file, fileList)
      const filePath = file.response.data.tmpPath
      const index = this.addForm.pics.findIndex(item => item.pic === filePath)
      this.addForm.pics.splice(index, 1)
    },
    handlePictureCardPreview(file) {
      this.dialogImageUrl = file.url
      this.dialogVisible = true
    },
    handleSuccess(response, file, fileList) {
      if (response.meta.status !== 200) {
        fileList.forEach((item, index) => {
          if (item.name === file.name) {
            fileList.splice(index, 1)
          }
        })
        return this.$message.error(response.meta.msg)
      } else {
        const picInfo = response.data.tmpPath
        // this.addForm.pics.push(picInfo)
        this.addForm.pics.push(picInfo)
      }
    },
    addItem() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          this.$message.error('请填写必要的表单项')
        }
        const form = JSON.parse(JSON.stringify(this.addForm))
        form.goodsCat = form.goodsCat.join(',')
        this.manyTableData.forEach(item => {
          const newInfo = {
            attrId: item.id,
            attrValue: item.attrVals.join(' ')
          }
          this.addForm.attrs.push(newInfo)
        })
        this.onlyTableData.forEach(item => {
          const newInfo = {
            attrId: item.id,
            attrValue: item.attrVals
          }
          this.addForm.attrs.push(newInfo)
        })
        form.attrs = this.addForm.attrs
        const { data: resp } = await this.$http.post('goods', form)
        if (resp.meta.status !== 200) {
          return this.$message.error(resp.meta.msg)
        }
        this.$message.success('添加商品成功')
        this.$router.push('/goods')
      })
    }
  }
}
</script>
<style lang='less' scoped>
.el-checkbox {
  margin: 0 10px 0 0 !important;
}
.btnAdd {
  margin-top: 80px;
}
</style>